0 equipment, especially on a ship, that uses sound waves to discover how deep the water is or the position of an object in the water, such as a group of fish --
1 a device on a ship that uses sound to show the position of objects under the water --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.